mirror of
https://github.com/OPM/opm-simulators.git
synced 2026-11-03 12:47:42 -06:00
Håkon Hægland
9c5469d6ad
Refactor TargetCalculator::groupTarget() to WellGroupHelper::getProductionGroupTarget(), and don't pass Group::ProductionControls as a parameter. Since TargetCalculator only works for a given group, passing control as a parameter is confusing and can be error prone if being passed a control for a different group than the TargetCalculator was constructed for.
380 lines
18 KiB
C++
380 lines
18 KiB
C++
/*
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Copyright 2016 - 2019 SINTEF Digital, Mathematics & Cybernetics.
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Copyright 2016 - 2018 Equinor ASA.
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Copyright 2017 Dr. Blatt - HPC-Simulation-Software & Services
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Copyright 2016 - 2018 Norce AS
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This file is part of the Open Porous Media project (OPM).
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OPM is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OPM is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OPM. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OPM_BLACKOILWELLMODEL_NETWORK_IMPL_HEADER_INCLUDED
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#define OPM_BLACKOILWELLMODEL_NETWORK_IMPL_HEADER_INCLUDED
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// Improve IDE experience
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#ifndef OPM_BLACKOILWELLMODEL_NETWORK_HEADER_INCLUDED
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#include <config.h>
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#include <opm/simulators/wells/BlackoilWellModelNetwork.hpp>
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#endif
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#include <opm/common/TimingMacros.hpp>
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#include <opm/common/utility/numeric/RootFinders.hpp>
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#include <opm/input/eclipse/Units/Units.hpp>
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#include <opm/simulators/utils/DeferredLoggingErrorHelpers.hpp>
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#include <opm/simulators/wells/BlackoilWellModel.hpp>
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#include <opm/simulators/wells/TargetCalculator.hpp>
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#include <opm/simulators/wells/WellBhpThpCalculator.hpp>
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#include <opm/simulators/wells/WellGroupControls.hpp>
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#include <fmt/format.h>
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namespace Opm {
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template<typename TypeTag>
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BlackoilWellModelNetwork<TypeTag>::
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BlackoilWellModelNetwork(BlackoilWellModel<TypeTag>& well_model)
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: BaseType(well_model)
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, well_model_(well_model)
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{}
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template<typename TypeTag>
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void
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BlackoilWellModelNetwork<TypeTag>::
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doPreStepRebalance(DeferredLogger& deferred_logger)
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{
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OPM_TIMEFUNCTION();
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const double dt = well_model_.simulator().timeStepSize();
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// TODO: should we also have the group and network backed-up
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// here in case the solution did not get converged?
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auto& well_state = well_model_.wellState();
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const bool changed_well_group =
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well_model_.updateWellControlsAndNetwork(true, dt, deferred_logger);
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well_model_.assembleWellEqWithoutIteration(dt, deferred_logger);
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const bool converged =
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well_model_.getWellConvergence(well_model_.B_avg(), true).converged() &&
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!changed_well_group;
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OPM_BEGIN_PARALLEL_TRY_CATCH();
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for (auto& well : this->well_model_) {
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well->solveEqAndUpdateWellState(well_model_.simulator(),
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well_model_.groupStateHelper(),
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well_state,
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deferred_logger);
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}
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OPM_END_PARALLEL_TRY_CATCH("BlackoilWellModelNetwork::doPreStepRebalance() failed: ",
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well_model_.simulator().vanguard().grid().comm());
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if (!converged) {
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const std::string msg =
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fmt::format("Initial (pre-step) network balance did not converge.");
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deferred_logger.warning(msg);
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}
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}
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template<typename TypeTag>
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std::tuple<bool, typename BlackoilWellModelNetwork<TypeTag>::Scalar>
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BlackoilWellModelNetwork<TypeTag>::
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update(const bool mandatory_network_balance,
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DeferredLogger& deferred_logger,
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const bool relax_network_tolerance)
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{
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OPM_TIMEFUNCTION();
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const int episodeIdx = well_model_.simulator().episodeIndex();
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const auto& network = well_model_.schedule()[episodeIdx].network();
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if (!well_model_.wellsActive() && !network.active()) {
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return {false, 0.0};
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}
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const int iterationIdx = well_model_.simulator().model().newtonMethod().numIterations();
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const auto& comm = well_model_.simulator().vanguard().grid().comm();
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// network related
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Scalar network_imbalance = 0.0;
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bool more_network_update = false;
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if (this->shouldBalance(episodeIdx, iterationIdx) || mandatory_network_balance) {
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OPM_TIMEBLOCK(BalanceNetwork);
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const double dt = well_model_.simulator().timeStepSize();
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// Calculate common THP for subsea manifold well group (item 3 of NODEPROP set to YES)
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const bool well_group_thp_updated = computeWellGroupThp(dt, deferred_logger);
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const int max_number_of_sub_iterations =
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well_model_.param().network_max_sub_iterations_;
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const Scalar network_pressure_update_damping_factor =
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well_model_.param().network_pressure_update_damping_factor_;
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const Scalar network_max_pressure_update =
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well_model_.param().network_max_pressure_update_in_bars_ * unit::barsa;
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bool more_network_sub_update = false;
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for (int i = 0; i < max_number_of_sub_iterations; i++) {
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const auto local_network_imbalance =
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this->updatePressures(episodeIdx,
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network_pressure_update_damping_factor,
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network_max_pressure_update);
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network_imbalance = comm.max(local_network_imbalance);
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const auto& balance = well_model_.schedule()[episodeIdx].network_balance();
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constexpr Scalar relaxation_factor = 10.0;
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const Scalar tolerance =
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relax_network_tolerance ? relaxation_factor * balance.pressure_tolerance()
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: balance.pressure_tolerance();
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more_network_sub_update = this->active() && network_imbalance > tolerance;
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if (!more_network_sub_update) {
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break;
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}
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for (const auto& well : well_model_) {
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if (well->isInjector() || !well->wellEcl().predictionMode()) {
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continue;
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}
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const auto it = this->node_pressures_.find(well->wellEcl().groupName());
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if (it != this->node_pressures_.end()) {
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well->prepareWellBeforeAssembling(well_model_.simulator(),
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dt,
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well_model_.groupStateHelper(),
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well_model_.wellState(),
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deferred_logger);
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}
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}
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well_model_.updateAndCommunicateGroupData(episodeIdx,
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iterationIdx,
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well_model_.param().nupcol_group_rate_tolerance_,
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/*update_wellgrouptarget*/ true,
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deferred_logger);
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}
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more_network_update = more_network_sub_update || well_group_thp_updated;
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}
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return { more_network_update, network_imbalance };
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}
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template <typename TypeTag>
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bool
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BlackoilWellModelNetwork<TypeTag>::
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computeWellGroupThp(const double dt, DeferredLogger& local_deferredLogger)
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{
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OPM_TIMEFUNCTION();
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const int reportStepIdx = well_model_.simulator().episodeIndex();
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const auto& network = well_model_.schedule()[reportStepIdx].network();
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const auto& balance = well_model_.schedule()[reportStepIdx].network_balance();
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const Scalar thp_tolerance = balance.thp_tolerance();
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if (!network.active()) {
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return false;
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}
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auto& well_state = well_model_.wellState();
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auto& group_state = well_model_.groupState();
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bool well_group_thp_updated = false;
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for (const std::string& nodeName : network.node_names()) {
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const bool has_choke = network.node(nodeName).as_choke();
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if (has_choke) {
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const auto& summary_state = well_model_.simulator().vanguard().summaryState();
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const Group& group = well_model_.schedule().getGroup(nodeName, reportStepIdx);
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//TODO: Auto choke combined with RESV control is not supported
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std::vector<Scalar> resv_coeff(Indices::numPhases, 1.0);
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const auto ctrl = group.productionControls(summary_state);
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auto cmode_tmp = ctrl.cmode;
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Scalar target_tmp{0.0};
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bool fld_none = false;
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if (cmode_tmp == Group::ProductionCMode::FLD || cmode_tmp == Group::ProductionCMode::NONE) {
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fld_none = true;
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// Target is set for an ancestor group. Target for autochoke group to be
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// derived via group guide rates
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const Scalar efficiencyFactor = 1.0;
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const Group& parentGroup = well_model_.schedule().getGroup(group.parent(), reportStepIdx);
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auto target = WellGroupControls<Scalar, IndexTraits>::
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getAutoChokeGroupProductionTargetRate(group,
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parentGroup,
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well_model_.groupStateHelper(),
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well_model_.schedule(),
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summary_state,
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resv_coeff,
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efficiencyFactor,
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reportStepIdx,
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&well_model_.guideRate(),
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local_deferredLogger);
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target_tmp = target.first;
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cmode_tmp = target.second;
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}
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using TargetCalculatorType = GroupStateHelpers::TargetCalculator<Scalar, IndexTraits>;
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TargetCalculatorType tcalc{well_model_.groupStateHelper(), resv_coeff, group};
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if (!fld_none)
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{
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// Target is set for the autochoke group itself
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target_tmp = tcalc.groupTarget(local_deferredLogger);
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}
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const Scalar orig_target = target_tmp;
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auto mismatch = [&] (auto group_thp) {
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Scalar group_rate(0.0);
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Scalar rate(0.0);
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for (auto& well : well_model_) {
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std::string well_name = well->name();
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auto& ws = well_state.well(well_name);
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if (group.hasWell(well_name)) {
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well->setDynamicThpLimit(group_thp);
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const Well& well_ecl = well_model_.eclWells()[well->indexOfWell()];
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const auto inj_controls = Well::InjectionControls(0);
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const auto prod_controls = well_ecl.productionControls(summary_state);
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well->iterateWellEqWithSwitching(well_model_.simulator(),
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dt,
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inj_controls,
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prod_controls,
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well_model_.groupStateHelper(),
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well_state,
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local_deferredLogger,
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/*fixed_control=*/false,
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/*fixed_status=*/false,
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/*solving_with_zero_rate=*/false);
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rate = -tcalc.calcModeRateFromRates(ws.surface_rates);
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group_rate += rate;
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}
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}
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return (group_rate - orig_target)/orig_target;
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};
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const auto upbranch = network.uptree_branch(nodeName);
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const auto it = this->node_pressures_.find((*upbranch).uptree_node());
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const Scalar nodal_pressure = it->second;
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Scalar well_group_thp = nodal_pressure;
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std::optional<Scalar> autochoke_thp;
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if (auto iter = this->well_group_thp_calc_.find(nodeName);
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iter != this->well_group_thp_calc_.end())
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{
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autochoke_thp = this->well_group_thp_calc_.at(nodeName);
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}
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using WellBhpThpCalculatorType = WellBhpThpCalculator<Scalar, IndexTraits>;
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//Find an initial bracket
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std::array<Scalar, 2> range_initial;
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if (!autochoke_thp.has_value()){
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Scalar min_thp, max_thp;
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// Retrieve the terminal pressure of the associated root of the manifold group
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std::string node_name = nodeName;
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while (!network.node(node_name).terminal_pressure().has_value()) {
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auto branch = network.uptree_branch(node_name).value();
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node_name = branch.uptree_node();
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}
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min_thp = network.node(node_name).terminal_pressure().value();
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WellBhpThpCalculatorType::bruteForceBracketCommonTHP(mismatch, min_thp, max_thp);
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// Narrow down the bracket
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Scalar low1, high1;
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std::array<Scalar, 2> range = {Scalar{0.9}*min_thp, Scalar{1.1}*max_thp};
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std::optional<Scalar> appr_sol;
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WellBhpThpCalculatorType::bruteForceBracketCommonTHP(mismatch,
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range,
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low1,
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high1,
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appr_sol,
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0.0,
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local_deferredLogger);
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min_thp = low1;
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max_thp = high1;
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range_initial = {min_thp, max_thp};
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}
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if (!autochoke_thp.has_value() || autochoke_thp.value() > nodal_pressure) {
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// The bracket is based on the initial bracket or
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// on a range based on a previous calculated group thp
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std::array<Scalar, 2> range = autochoke_thp.has_value() ?
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std::array<Scalar, 2>{Scalar{0.9} * autochoke_thp.value(),
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Scalar{1.1} * autochoke_thp.value()} : range_initial;
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Scalar low, high;
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std::optional<Scalar> approximate_solution;
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const Scalar tolerance1 = thp_tolerance;
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local_deferredLogger.debug("Using brute force search to bracket the group THP");
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const bool finding_bracket = WellBhpThpCalculatorType::
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bruteForceBracketCommonTHP(mismatch,
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range,
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low,
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high,
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approximate_solution,
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tolerance1,
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local_deferredLogger);
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if (approximate_solution.has_value()) {
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autochoke_thp = *approximate_solution;
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local_deferredLogger.debug("Approximate group THP value found: " +
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std::to_string(autochoke_thp.value()));
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} else if (finding_bracket) {
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const Scalar tolerance2 = thp_tolerance;
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const int max_iteration_solve = 100;
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int iteration = 0;
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autochoke_thp = RegulaFalsiBisection<ThrowOnError>::
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solve(mismatch,
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low,
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high,
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max_iteration_solve,
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tolerance2,
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iteration);
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local_deferredLogger.debug(" bracket = [" + std::to_string(low) + ", " +
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std::to_string(high) + "], " +
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"iteration = " + std::to_string(iteration));
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local_deferredLogger.debug("Group THP value = " + std::to_string(autochoke_thp.value()));
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} else {
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autochoke_thp.reset();
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local_deferredLogger.debug("Group THP solve failed due to bracketing failure");
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}
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}
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if (autochoke_thp.has_value()) {
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well_group_thp_calc_[nodeName] = autochoke_thp.value();
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// Note: The node pressure of the auto-choke node is set
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// to well_group_thp in computeNetworkPressures()
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// and must be larger or equal to the pressure of the uptree node of its branch.
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well_group_thp = std::max(autochoke_thp.value(), nodal_pressure);
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}
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for (auto& well : well_model_) {
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std::string well_name = well->name();
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if (well->isInjector() || !well->wellEcl().predictionMode())
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continue;
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if (group.hasWell(well_name)) {
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well->setDynamicThpLimit(well_group_thp);
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}
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const auto& ws = well_model_.wellState().well(well->indexOfWell());
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const bool thp_is_limit = ws.production_cmode == Well::ProducerCMode::THP;
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if (thp_is_limit) {
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well->prepareWellBeforeAssembling(well_model_.simulator(),
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dt,
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well_model_.groupStateHelper(),
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well_model_.wellState(),
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local_deferredLogger);
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}
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}
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// Use the group THP in computeNetworkPressures().
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const auto& current_well_group_thp = group_state.is_autochoke_group(nodeName)
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? group_state.well_group_thp(nodeName)
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: 1e30;
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if (std::abs(current_well_group_thp - well_group_thp) > balance.pressure_tolerance()) {
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well_group_thp_updated = true;
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group_state.update_well_group_thp(nodeName, well_group_thp);
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}
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}
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}
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return well_group_thp_updated;
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}
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} // namespace Opm
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#endif // OPM_BLACKOILWELLMODEL_NETWORK_IMPL_HEADER_INCLUDED
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